Gruk the Frigid, one of the epics, as far as I know Gruk doesn't have something special to loot and it's quiet difficult to fight him. Maybe it would be an idea to add "The Rancor" and "The Zealot" to Gruks loot table. I had totally forgotten about the "Swarm Tyrant Shield", if I remember right it had it's own appearance, maybe the appearance could be used for a new decent shield and for the dragons a scale and added to Gruk as well. I'd like the idea to make it reasonable to fight Gruk.